Be keen of
在…很敏锐
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
keen
[kin]
adj. 厉害的，强烈的;敏锐的，敏捷的;锐利的;热心的;
vi. （为死者）恸哭，哀号;
n. 〈英〉号哭，恸哭;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
You're welcome.
别客气，欢迎你再来。
As soon as she quit the room he returned to it.
她刚离开房间，他回来了。
The man who manoeuvres carelessly into his five shillings worth of space ,at one of Europe's myriad permanent sites may find himself bumping a Bentley.
如果一位游客漫不经心地驾车驶入欧洲无数常年营地之一，花20镑租用一个空位，那么他可能会碰见一辆本特利汽车，